There is no fixed length as it depends on the pedal height.
Follow this carefully.
1. Release the jam nut.
2. Turn the push rod clockwise by hand till resistance is felt, as if the push rod is fully extended. Minimal force should be used to prevent the push rod from being exerted against the master cylinder piston.
3. Reverse the rotation of the push rod by 1/2 turn to get the minimal pedal clearance.
4. Tighten the lock nut, ensure the push rod does not turn to prevent the adjustment from being affected.
5. Test drive again.
Wednesday, November 5th, 2008 AT 12:33 PM